--- Talking of travel, have you ever been to Chicago?
--- Yes. I _____ it twice while I was working in the US.
| A．have visited | B．visited |
| C．was visiting | D．would visit |
— Have you seen my glasses?
— Yes, I _____ them on your desk a minute ago.
| A．see | B．saw | C．have seen | D．had seen |
Since his retirement from teaching music in 2001, Mr. Smith ______ a good deal of time painting as an artist.
| A．spent | B．has spent | C．had spent | D．spends |
One of the requirements for a fire is that the material _________ to its burning temperature.
| A．is heated | B．be heated |
| C．would be heated | D．shall be heated |
Much disappointed as he is _______ in the job interview, he still keeps his confidence．
| A．to have failed | B．failed |
| C．having failed | D．failing |
Ladies and gentlemen，please return to your seat and fasten your safety belt. Our plane_________.
| A．takes off | B．is taking off |
| C．has taken off | D．will be taking off |
— I’ve never seen you so rude!
— I _____ something I shouldn’t have, but I didn’t mean that.
| A．have said | B．had said |
| C．did say | D．was saying |
If John Lennon and Paul McCartney _______ , the pop music of today ________ very different.
| A．didn’t meet ; would be |
| B．hadn’t met; would be |
| C．didn’t meet ; would have been |
| D．hadn’t met ; would have been |
The upset mother thought to herself, “If only I ______ what’s going on in my little boy’s head right now.”
| A．know | B．knew | C．have known | D．had known |
If he takes on this work, he will have no choice but____an even greater challenge.
| A．meets | B．meeting | C．meet | D．to meet |
Peter has gone to Beijing, but I’m wondering why he ________ in such a hurry．
| A．left | B．has left | C．leaves | D．was leaving |
The moment I got back to the classroom, I found I _______ my jacket on the playground.
| A．left | B．had left | C．have left | D．was leaving |
Mr. Baker including some tourists ______ the Great Wall before, so they headed for the Forbidden City.
| A．has gone to | B．have gone to |
| C．has been to | D．have been to |
Father ________ for London on business upon my arrival, so I didn’t see him.
| A．has left | B．left | C．had left | D．was leaving |
A recent research shows that there _____ volcanic activities on the moon and Mars. However, they no longer exist now.
| A．had been | B．has been | C．were | D．would be |
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